osdir.com

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Ceph RBD issues in 4.11


Hello Dev,

I have recently upgraded our cloudstack environment to 4.11. Mostly all has been smooth. ( this environment is legacy from cloud.com days! )

There are some issues that I have run into:

1.Can't install any VMs from ISO ( I have seen this in the list previously but can't find a bug report for it ) If further reports or debug will help I can assist. It is easy to reproduce.
2.When a VM is created from a template, the RBD features are lost. More info below.

Example of VM volume from template: -

user@NAS-AUBUN-RK3-CEPH01:~# rbd info AUBUN-KVM-CLUSTER01-SSD/feeb52ec-f111-4a0d-9785-23aadd7650a5

rbd image 'feeb52ec-f111-4a0d-9785-23aadd7650a5':
        size 150 GB in 38400 objects
        order 22 (4096 kB objects)
        block_name_prefix: rbd_data.142926a5ee64
        format: 2
        features: layering
        flags:
        create_timestamp: Fri Apr 27 12:46:21 2018
        parent: AUBUN-KVM-CLUSTER01-SSD/d7dcd9e4-ed55-44ae-9a71-52c9307e53b4@cloudstack-base-snap
        overlap: 150 GB

Note the features are not the same as the parent : -

user@NAS-AUBUN-RK3-CEPH01:~# rbd info AUBUN-KVM-CLUSTER01-SSD/d7dcd9e4-ed55-44ae-9a71-52c9307e53b4
rbd image 'd7dcd9e4-ed55-44ae-9a71-52c9307e53b4':
        size 150 GB in 38400 objects
        order 22 (4096 kB objects)
        block_name_prefix: rbd_data.141d274b0dc51
        format: 2
        features: layering, exclusive-lock, object-map, fast-diff, deep-flatten
        flags:
        create_timestamp: Fri Apr 27 12:37:05 2018


If you manually clone the volume the expected features are retained. We are running the latest Ceph version, KVM hosts on Ubuntu 16.04 with the latest Luminous qemu-img.

Kind regards,
Glen Baars

This e-mail is intended solely for the benefit of the addressee(s) and any other named recipient. It is confidential and may contain legally privileged or confidential information. If you are not the recipient, any use, distribution, disclosure or copying of this e-mail is prohibited. The confidentiality and legal privilege attached to this communication is not waived or lost by reason of the mistaken transmission or delivery to you. If you have received this e-mail in error, please notify us immediately.